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Set prefix, delimiter params even when empty #282

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merged 1 commit into from
Mar 1, 2019

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harshavardhana
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We have never set values which are empty on the request
because they are perhaps not useful in the List query,
but this assumption is wrong when there are restricted
policies for a given user, because empty is actually
a valid value in IAM or Bucket policy conditions.

For example following condition would never work with our
ListObjects call and AWS cli would work fine.

        "Condition": {
            "StringEquals": {
                "s3:prefix": [
                    "",
                    "data/",
                    "data"
                ],
                "s3:delimiter": [
                    "/",
                    ""
                ]
            }
        }

The reason is empty or not prefix and delimiter should be
added to the query param in List operation, such that server
can use the value to validate the policies for the incoming
request.

Refer minio/minio-go#1064

@krisis
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krisis commented Feb 1, 2019

@harshavardhana could you check why travis-CI is failing?

@harshavardhana
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@harshavardhana could you check why travis-CI is failing?

PR is ready for review @krisis @sinhaashish

@harshavardhana harshavardhana force-pushed the fix-queries branch 2 times, most recently from aa8e0f6 to 80bfdeb Compare February 28, 2019 02:44
We have never set values which are empty on the request
because they are perhaps not useful in the List query,
but this assumption is wrong when there are restricted
policies for a given user, because empty is actually
a valid value in IAM or Bucket policy conditions.

For example following condition would never work with our
ListObjects call and AWS cli would work fine.

            "Condition": {
                "StringEquals": {
                    "s3:prefix": [
                        "",
                        "data/",
                        "data"
                    ],
                    "s3:delimiter": [
                        "/",
                        ""
                    ]
                }
            }

The reason is empty or not prefix and delimiter should be
added to the query param in List operation, such that server
can use the value to validate the policies for the incoming
request.

Refer minio/minio-go#1064
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@sinhaashish sinhaashish left a comment

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LGTM

@harshavardhana harshavardhana merged commit 5885aad into minio:master Mar 1, 2019
@harshavardhana harshavardhana deleted the fix-queries branch March 1, 2019 04:32
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4 participants